package com.example.springbootvue.controller;

import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.springbootvue.common.Result;
import com.example.springbootvue.entity.User;
import com.example.springbootvue.mapper.UserMapper;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.sql.Wrapper;

@RestController
@RequestMapping("/user")
public class UserController {
    @Resource
    UserMapper userMapper;

    @PostMapping    //x新增
    public Result<?> save(@RequestBody User user){
        if(user.getPassword()==null){
            user.setPassword("123456");
        }
        userMapper.insert(user);
        return Result.success();
    }

    @GetMapping     //查询
    public Result<?> findPage(@RequestParam(defaultValue = "1") Integer pageNum,@RequestParam(defaultValue = "10") Integer pageSize,@RequestParam(defaultValue = "") String search){

        LambdaQueryWrapper<User> wrapper = Wrappers.<User>lambdaQuery();
        if(StrUtil.isNotBlank(search)){
            wrapper.like(User::getNickName,search);
        }
        Page<User> userPage = userMapper.findPage(new Page<>(pageNum, pageSize));//::=get(可以直接访问属性)
        return Result.success(userPage);
    }


    @PutMapping    //更新
    public Result<?> update(@RequestBody User user){
        userMapper.updateById(user);
        return Result.success();
    }

    @DeleteMapping("/{id}")    //删除
    public Result<?> delete(@PathVariable long id){
        userMapper.deleteById(id);
        return Result.success();
    }

    @PostMapping  ("/login")  //登录 （单查）
    public Result<?> login(@RequestBody User user){
        User res=userMapper.selectOne(Wrappers.<User>lambdaQuery().eq(User::getUsername,user.getUsername()).eq(User::getPassword,user.getPassword()));
        if(res==null){
            return Result.error("-1","用户名或密码错误");
        }
        return Result.success(res);
    }

    @PostMapping  ("/register")  //x新增
    public Result<?> register(@RequestBody User user){
       User res=userMapper.selectOne(Wrappers.<User>lambdaQuery().eq(User::getUsername,user.getUsername()));
        if(res!=null){
            return Result.error("-1","用户名重复");
        }
        if(user.getPassword()==null){
            user.setPassword("123456");
        }
        userMapper.insert(user);
        return Result.success();
    }

    @GetMapping ("/{id}")    //根据id查询
    public Result<?> getById(@PathVariable long id){
        return Result.success(userMapper.selectById(id));
    }

}
